Bobbin-winding machine



F. L. H'ARMON.

BOBBIN WINDING MACHINE. APPLICATION FILED NOV. 13, 1917.

Patented Oct. 19, 1920.

2 SHEETS-SHEET 1.

. 1 l l I I I H Illl HllllllilIllllhlllllllllllll lllllllllllllli UNITED STATES PATENT OFFICE.

FRANK L. HARMON, 011 BEVERLY, MASSACHUSETTS.

' BOBBIN-WINIDING MACHINE.

Specification of Letters Patent.

Patented Oct. 19, 1920.

Application filed November 13, 1917. Serial No. 201,777.

To all whom it may concern:

Be it known that I, FRANK L. HARMON, a citizen of the United States, and resident of Beverly, county of Essex, Commonwealth of Massachusetts, have invented an Improvement in'B'obbin-Winding Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts in each of the several views.

This invention relates to bobbin winding machines and more particularly to a mechanism specially adapted and designed for producing a bobbin comprising a series of bobbins connected together by the bobbin thread- A prime object of the present invention is to provide a mechanism for this purpose that is simple in construction, capable of rapid operation and entirely automatic including provisionfor stopping the machine after the entire bobbin is completed. The foregoing and other objects and advantages of the invention will more fully appear from the following detail description, and the distinctive features of novelty will be pointed out in the appended claims.

Referring to the drawings:

Figure 1 is a side elevation showing the machine embodying the present invention, a portion thereof being broken away in section; Fig. 2 is a plan view of the machine;

Fig. 3 is a side view from the opposite side to that of Fig. ,1 with a portion broken away Fig. 4 is an end view of the machine; and

Fig. 5 is an elevation showinga magazine bobbin as produced by the resent-invention.

A suitable base 10 is equipped with-spaced apart uprights 11, 12 having at their tops bearings 13, 14 for a tubular shaft 15 which is journaled therein and held from endwise movement with respect thereto in any suitable way, as shown by collars 16 fixed to said shaft at each side of the bearing 13. The shaft 15 is driven as shown by a belt pulley 17 around which passes a driving belt 18. This pulley has mounted and at one side thereof and between it and bearing 14 a loose pulley, 19 on to which the belt 18 is adapted to be thrown for stopping the machine as later described. The tubular shaft 15 extends a considerable distance backward from the rear bearing 13 where it has housed therein a compression coil spring 20 reacting against a screw 21 fitted into the outer end of said tubular shaft, the inner end of said spring pressing against a collar 22 fixed to the outer end of a spindle 23 extending forwardly in the shaft 15 and projecting from the forward end of said shaft. spindle 23 is held to turn with the shaft 15 by a stud 24 extending laterally from the head 22 through a long slot 25 in the shaft 15, which thus permits the spindle 23 to slide forward under the action of the spring 20' while held to rotate with the shaft 15. The forward portion of the spindle 23 is guided centrally in the shaft 15, which for this purpose has its bore reduced so as to fit said spindle. The forwardly projecting extremity of the spindle 23' has a cone bearing point 26 fitting against the outer portion of an arm 27 extending transversely from the outer end of a bar 28 fitted in bearings 29 on the machine frame, to slide inparallelism with the shaft 15. The arm 27 is pivoted to a stud 30 in the end of the bar 28, and it is normally held from angular turning with respect to said bar, and so that its outer portion engages the cone point 26, by

a pin 31 fitted in a rearward extension of said arm, and slidable into a socket 32 on a.v

transverse .projection of the bar 28; the pin 31 being equipped with a head for manual removal so that thearm 2.7 may beswung to uncover and clear from the endfof the spindle 23 When'required for removing the bobbin or for other purposes. The bobbin Winding instrumentallties consist in a thread guiding arm 33 pivoted at its lower end at 34 to a bearing stud 35 fixed to the machine frame, the upper end of this arm having a thread guiding eye 36 with a range of movement along the spindle and in suitable proximity thereto, relatively close to the bearing 14. For vibrating the thread guiding arm 33 it is equipped somewhat below its center with a projecting pin 37 engaging a cam path 38 of the cam 39 fixed on a shaft 40 journaled in a lower portion of the machine frame, this shaft being driven by spur gearing 41 from the tubular shaft 15. The bar 28 is formed with a series of spaced apart projections, constituting stop shoulders or ledges 42, these being illus. tratively shown as six in number. Cooperalive with these stop ledges is a bent arm 43 The pivoted at 44 to a stud on the machine frame, and a coil spring 45 is fitted on said stud and anchored to the machine frame, with its free extremity engaging the arm 43 as seen at 46 so that the arm 43 is pressed inward to engage the ledge 42 when the bar 28 is pressed inward, the spring 20 being then compressed. The arm 43 has rigid, and preferably integral therewith an 'upright finger 47 extending up alongside the bobbin winding range of the spindle opposite the thread guiding arm 33, and spaced from the spindle a distance corresponding to the bobbin to be wound, and adapted as a. bobbin portion reaches a proper dimension to be pressed outward by engagement with the periphery of the bobbin so as to force the arm 43 away from the ledge 42 with which it is engaged. The bar 28 also has fixed thereto some distance back of the ledges 42 a' downward and inward projection 48 on the side thereof-opposite said ledges and in position to engage the belt 18 after the arm 43 has been forced from engagement with the last ledge 42, to shift the belt off of the driving pulley 17 and on to the loose pulley 19 by the final action of the spring 20, thus stopping the machine after the last bobbin portion has been wound, and bringing the stop ledge 49, fast to the bar 28, into contact with the end of the bar bearing 29.

It may now be understood that in use the spindle 23 is pressed inward until the spring 20 is fully compressed and the arm 43 engages the outermostfone of the ledges42.

hereupon on starting the machine the first bobbin portion 6 will be wound on the outer end portion of the spindle, the thickness of this bobbin portion being of course determined by the throw of the cam path 38 which vibrates the thread guiding arm. As this bobbin portion nears completion its peripheral surface will engage the ,feeler finger or arm 47, forcing it and the arm 43 fast thereto outward until the arm 43 is disengaged from the ledge 42.' Thereupon the action of the spring 20 will press the spindle and with it the bar 28 outward until the next. notch 42 engages the arm 43 which has in the meantime been moved back inward by the spring 45, thus positioning the spindle for the next bobbin portion to be wound thereon alongside the just finished bobbin portion. It will be understood that the ledges 42 are spaced apart a distance corresponding to the thickness of the respective bobbin portions, and it is to be noted that this manner of winding will cause the'single continuous thread to be led from the periphery of each bobbin portion to the center of the next bobbin portion, so that each bobbin portion becomes a distinct entity for unwinding purposes, unwinding from the center until it is entirely given out and then the next bobbin portion startingin like manner from the center until the entire bobbin 2) is consumed. I believe that the present inven tion provides the first mechanism for producing a composite bobbin composed of a single thread and madeup of a plurality of bobbin portions each center unwinding as a separate unit as described. I also believe that the present mechanism is the firstwherein an automatic stop mechanism operated by a feeler or member engageable with the periphery of the completed bobbin portion, is combined with means operated by the same device for spacing the bobbin spindle in successive positions with respect to the winding member during the winding operation so as to provide a series of bobbin portions lying side by side. While as herein shown the rotating movement is imparted to the tubular shaft 15 for rotating the spindle with it, and the endwise movement by steps is imparted to the spindle and with it the bar 28, it is to be understood that these par: ticular instrumentalities for obtaining the rotating and stepped endwise movement of the spindle are merely illustrative, and that any equivalent mechanism may be employed within the scope of the invention so long as the same is capable of producing the rotation of the spindle in combination with a step-by-step endwise movement thereof with respect to the winding instrumentality, i. 6., the thread guiding arm 33; e. 9., this stepby-step endwise movement of the spindle is to be understood as relative with respect to the thread guiding instrumentality and may be imparted to either of these elements within the scope of the invention. I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

Having described my invention, what I claim-as new and desire to secure by Letters Patent is: 1 j

1. A bobbin winding machine comprising: a spindle and a thread guide, means for rotating the spindle, and means for actuating the thread guide; and also comprisingan operative device for changing the relative positions of the spindle and the thread guide between the windings of a plurality of bobbins of one connecting thread, connected with, and started into action by the winding thread mass, and also comprising means for stopping the winding when a predetermined number of connected bobbins are wound. v

2. Bobbin winding mechanism, comprising a spindle with means for rotating the same, a thread guide with means for moving the same to and fro for laying the thread, and means for moving said spindle endwise step-by-step at intervals to permit I l, l l 4 winding of successlve bobbin portions to produce a composite center unwinding bobbin.

8. A bobbin Winding machine comprising a spindle, a thread guide, and means for actuating it to carry winding coils of thread across each other between the ends of each bobbin to hold the bobbins intact after they are removed from the Winding spindle, and means actuated by the Winding thread mass to start a mechanism comprising means for automatically changing the relative positions of a Wound bobbin and the thread guide after a bobbin is wound and before another. bobbin is begun, and also compris-- ing automatic means for causing the. winding to cease after a plurality of bobbins connected together by the bobbin thread are wound.

4. Bobbin Winding mechanism, comprising a spindle with means for rotating it, a thread guide with means for moving it to and fro for laying the thread on said spin ing a spindle with means'for rotating it, a thread guide with means for moving it to and fro for laying the thread on said spindle, means for moving said spindle endwise step-by-step at intervals with respect to said thread guide for the purpose stated, said means having anelement associated therewith for stopping the machine upon the completion of a bobbin, and having an operating element engaging the periphery of the bobbin as it reaches its finished diameter for controlling said step-by-step 'and stop movements.

6. A bobbin winding machine comprising:a spindle, means for rotating it, a

thread guide, and means for actuating it' to lay flat layers of thread across each other to wind a bobbin parallel to the spindle,

means connected with the Winding thread mass, adapted to be moved by the Winding thread mass when the winding thread mass is Wound to the proper diameter, and means adapted to be started by the means connected with the winding thread mass to change the relative positions of the spindle and a Wound bobbin thereon, and the thread guide to wind another bobbin.

In testimony whereof I have signed my name to this specification.

FRANK L. HARMON. 

